Linux Kernel Heap Buffer Overflow DoS

The vulnerability of the kvmvcpuwriteguest function in the Linux operating system is related to pointer manipulation. Exploiting this vulnerability could allow an attacker to trigger a service failure...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-989947)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-989947 advisory. In the Linux kernel, the following vulnerability has been resolved: sfc: fix use after free when disabling sriov Use after free is detected by kfence when disabling...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-988824)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-988824 advisory. In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Immediately reset the MMU context when the SMM flag is cleared Immediately reset the MM...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-988689)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-988689 advisory. In the Linux kernel, the following vulnerability has been resolved: KVM: Don't null dereference ops-destroy A KVM device cleanup happens in either of two callbacks: ...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-989676)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-989676 advisory. In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix gart.bo pincount leak gmcv9,100gartdisable isn't called matched with correspoding...

CVE-2025-54327

An issue was discovered in VTS in Samsung Mobile Processor and Wearable Processor Exynos 1280, 2200, 1380, W920, W930, W1000. Improper input validation in the VTS driver leads to an arbitrary write...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: KVM: Allow the CPU to reschedule while setting per-page memory attributes. When running a SEV-SNP guest with a sufficiently large amount of memory 1TB+, the host may experience CPU soft lockups when performing an operation in...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: KVM: x86/xen – Fixed the cleanup logic in the emulation of Xen schedop poll hypercalls. In kvmxenschedoppoll, the kmallocarray function is called when a VM polls the host for more than one event channel nrports 1. After the...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/hyper-v: Skip non-canonical addresses during PV TLB flush In KVM guests with Hyper-V hypercalls enabled, the hypercalls HVCALLFLUSHVIRTUALADDRESSLIST and HVCALLFLUSHVIRTUALADDRESSLISTEX allow a guest to request...

Astra Linux – vulnerability in linux-6.1

In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: Leak pages if setmemoryencrypted fails In CoCo VMs, it is possible for the untrusted host to cause setmemoryencrypted or setmemorydecrypted to fail, resulting in an error and shared memory being returned...

UBUNTU-CVE-2025-58149

When passing through PCI devices, the detach logic in libxl won't remove access permissions to any 64bit memory BARs the device might have. As a result a domain can still have access any 64bit memory BAR when such device is no longer assigned to the domain. For PV domains the permission leak allo...

CVE-2025-58149

The Xen hypervisor is affected by a vulnerability where the libxl detach logic fails to remove access permissions for 64-bit memory BARs when PCI devices are detached. This allows a domain to retain access to memory from a device no longer assigned to it. In PV domains , this leak allows the doma...

Ubuntu 18.04 LTS : Linux kernel (KVM) vulnerabilities (USN-7854-1)

"The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7854-1 advisory. Jean-Claude Graf, Sandro Regge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation betwe...

PT-2025-44620

Name of the Vulnerable Software and Affected Versions libxl affected versions not specified Description The detach logic in libxl does not remove access permissions to 64-bit memory BARs when passing through PCI devices. This can allow a domain to retain access to these memory BARs even after the...

CVE-2025-40102

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Prevent access to vCPU events before init Another day, another syzkaller bug. KVM erroneously allows userspace to pend vCPU events for a vCPU that hasn't been initialized yet, leading to KVM interpreting a bunch of...

AZL-69400 CVE-2025-40104 affecting package kernel for versions less than 6.6.117.1-1

In the Linux kernel, the following vulnerability has been resolved: ixgbevf: fix mailbox API compatibility by negotiating supported features There was backward compatibility in the terms of mailbox API. Various drivers from various OSes supporting 10G adapters from Intel portfolio could easily...

AZL-69412 CVE-2025-40102 affecting package kernel for versions less than 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Prevent access to vCPU events before init Another day, another syzkaller bug. KVM erroneously allows userspace to pend vCPU events for a vCPU that hasn't been initialized yet, leading to KVM interpreting a bunch of...

CVE-2025-40102

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Prevent access to vCPU events before init Another day, another syzkaller bug. KVM erroneously allows userspace to pend vCPU events for a vCPU that hasn't been initialized yet, leading to KVM interpreting a bunch of...

kernel: KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0 Don't BUG/WARN on interrupt injection due to GIF being cleared, since it's trivial for userspace to force the situation via KVMSETVCPUEVENTS even if having at least...

Moderate: Red Hat Security Advisory: kernel-rt security update

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...